#283AAD#283AAD

#283AAD is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.183 H 269.4°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#283AAD
RGB	rgb(40, 58, 173)
HSL	hsl(232, 62%, 42%)
HSV	hsv(232, 77%, 68%)
CMYK	cmyk(76.9%, 66.5%, 0%, 32.2%)
CIE-LAB	lab(30.62, 34.51, -63.16)
CIE-LCH	lch(30.62, 71.97, 298.65°)
OKLab	oklab(41.57% -0.002 -0.1827)
OKLCH	oklch(41.57% 0.183 269.4)
XYZ	xyz(9.9284, 6.4933, 40.2571)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283AAD #AD9B28

analogous

#287DAD #283AAD #5928AD

triadic

#283AAD #AD283A #3AAD28

tetradic

#283AAD #AD287D #AD9B28 #28AD59

square

#283AAD #AD287D #AD9B28 #28AD59

split-complementary

#283AAD #AD5928 #7DAD28

monochromatic

#11194A #1D297B #283AAD #3F53D3 #7180DE

Accessibility & contrast

On white

9.14

#283AAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#283AAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283AAD

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283AAD	#FFFFFF	#000000	##FFFFFF
##283AAD	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB1

Deuteranopia (green-blind)

#0042AB

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283aad;
/* rgb */ color: rgb(40, 58, 173);
/* oklch */ color: oklch(41.6% 0.183 269.4);

Tailwind

colors: {
  custom: {
    50: '#7870c6',
    500: '#283aad',
    950: '#000000',
  },
}

SCSS

$custom: #283aad;
$custom-light: #7870c6;
$custom-dark: #000000;

JSON

{
  "hex": "#283aad",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 173
  },
  "hsl": {
    "h": 231.88,
    "s": 62.441,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41571,
    "c": 0.18276,
    "h": 269.4
  },
  "luminance": 0.06494
}

Semantic roles & 50–950 ramp

primary

#283AAD

secondary

#C5B96C

accent

#CF42E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283AAD

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →